28157640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{33521}}^1$

素因数の和:33542

約数の個数: 64

約数和(自身を含む): 96543360

約数和(自身を除く): 68385720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 33521, 67042, 100563, 134084, 167605, 201126, 234647, 268168, 335210, 402252, 469294, 502815, 670420, 703941, 804504, 938588, 1005630, 1173235, 1340840, 1407882, 1877176, 2011260, 2346470, 2815764, 3519705, 4022520, 4692940, 5631528, 7039410, 9385880, 14078820, 28157640]

約数ペア:

[(1, 28157640), (2, 14078820), (3, 9385880), (4, 7039410), (5, 5631528), (6, 4692940), (7, 4022520), (8, 3519705), (10, 2815764), (12, 2346470), (14, 2011260), (15, 1877176), (20, 1407882), (21, 1340840), (24, 1173235), (28, 1005630), (30, 938588), (35, 804504), (40, 703941), (42, 670420), (56, 502815), (60, 469294), (70, 402252), (84, 335210), (105, 268168), (120, 234647), (140, 201126), (168, 167605), (210, 134084), (280, 100563), (420, 67042), (840, 33521)]